CN101294084A - Air film coke quenching method - Google Patents
Air film coke quenching method Download PDFInfo
- Publication number
- CN101294084A CN101294084A CNA2007100348503A CN200710034850A CN101294084A CN 101294084 A CN101294084 A CN 101294084A CN A2007100348503 A CNA2007100348503 A CN A2007100348503A CN 200710034850 A CN200710034850 A CN 200710034850A CN 101294084 A CN101294084 A CN 101294084A
- Authority
- CN
- China
- Prior art keywords
- coke
- water
- agent
- aqueous solution
- air film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000571 coke Substances 0.000 title claims abstract description 50
- 238000010791 quenching Methods 0.000 title claims abstract description 47
- 230000000171 quenching effect Effects 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003381 stabilizer Substances 0.000 claims abstract description 12
- 238000005086 pumping Methods 0.000 claims abstract 3
- 239000007864 aqueous solution Substances 0.000 claims description 24
- 239000007921 spray Substances 0.000 claims description 12
- 229920002521 macromolecule Polymers 0.000 claims description 5
- 239000004094 surface-active agent Substances 0.000 claims description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000013543 active substance Substances 0.000 claims description 4
- 229920003169 water-soluble polymer Polymers 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 3
- 241000282326 Felis catus Species 0.000 claims description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 2
- 125000003368 amide group Chemical group 0.000 claims description 2
- 239000003945 anionic surfactant Substances 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 claims description 2
- 125000004185 ester group Chemical group 0.000 claims description 2
- 235000013312 flour Nutrition 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 2
- 108090000623 proteins and genes Proteins 0.000 claims description 2
- 102000004169 proteins and genes Human genes 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 4
- 238000004939 coking Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000006260 foam Substances 0.000 abstract 2
- 239000004088 foaming agent Substances 0.000 abstract 2
- 238000002161 passivation Methods 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 polyoxyethylene Polymers 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- PHTPHAMUSRCLIV-UHFFFAOYSA-N 3-aminotetradecan-2-one Chemical compound C(C)(=O)C(CCCCCCCCCCC)N PHTPHAMUSRCLIV-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 241001474374 Blennius Species 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- ILFFFKFZHRGICY-UHFFFAOYSA-N anthracene-1-sulfonic acid Chemical compound C1=CC=C2C=C3C(S(=O)(=O)O)=CC=CC3=CC2=C1 ILFFFKFZHRGICY-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- SVBAPZTYWZGPKN-UHFFFAOYSA-N n-methyldodecan-1-amine;hydrochloride Chemical compound Cl.CCCCCCCCCCCCNC SVBAPZTYWZGPKN-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000006053 organic reaction Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Landscapes
- Coke Industry (AREA)
Abstract
The invention relates to the coking field, in particular to a gas film coke quenching method. The gas film quenching method comprises the following steps: (1) uniformly mixing a foaming agent, a foam stabilizer and a film forming agent in a ratio of 100:(1 to 30):(1 to 50) and dissolving in water, or individually dissolving the above materials in water in the ratio, or individually dissolving the above materials in water in the ratio and mixing to obtain a solution with the total concentration of 5 to 50%; (2) pouring or pumping the high-concentration solution in a quenching water tank to obtain a solution with the concentration of 0.01 to 1% in the quenching water tank; and (3) pumping the solution in a sprayer, and spraying the solution on hot coke to reduce the temperature of the hot coke below 200 DEG C. The solution with the foaming agent, the foam stabilizer and the film forming agent can be used for coke quenching as the substitute for common water by forming a gas film on the surface of high-temperature coke to prevent water from directly contacting with the coke and to prevent the coke from being damaged by the water, which is equivalent to coke dry quenching, and meanwhile, the film forming agent can form a passivation film on the coke surface, thus achieving remarkable advantages such as (1) greatly improved coke quality and (2) greatly reduced discharge of harmful steam, which is conducive to environmental protection.
Description
Technical field
The invention belongs to the coking technology field, refer to a kind of air film coke quenching method especially.
Background technology:
Present coke quenching method has dry coke quenching and water quenching, dry coke quenching is with rare gas element cooling cokes such as nitrogen, and it has raising coke property, effect in energy saving and environmental protection, be a kind of advanced person's coke quenching method, but because equipment manufacturing cost is high and the running cost height can't generally be promoted in non-developed country.The water quenching is to make the quenching medium with ortho-water, is a kind of coke quenching method that is most widely used at present, and its advantage is that equipment manufacturing cost is low, and running cost is low; Shortcoming is to reduce coke quality on the one hand, produces a large amount of harmful steam rows of containing benzene, phenol, prussiate, sulfide and dust on the other hand to atmosphere, causes huge environmental pollution and thermal pollution.Though the method for adding passivator in coke quenching water is arranged at present, add the hot strength that passivator only can improve some coke, still be powerless in others.
Summary of the invention
The objective of the invention is: a kind of air film coke quenching method is provided, it does not change the Processes and apparatus of traditional water quenching, only in coke quenching water, add whipping agent, suds-stabilizing agent and membrane-forming agent, substitute ortho-water with this mixture aqueous solution that has added whipping agent, stablizer and membrane-forming agent then and carry out quenching, just can increase substantially coke quality on the one hand, reduce the coke water ratio; Reduce the quantity discharged of harmful water steam on the other hand significantly, help environment protection.
Air film coke quenching method of the present invention is as follows: 1. with whipping agent, suds-stabilizing agent and membrane-forming agent are with 100: (1～30): being dissolved in the water after the weight ratio of (1～50) mixes and being mixed with total concn is 5～50% the aqueous solution, perhaps with whipping agent, suds-stabilizing agent and membrane-forming agent are by 100: (1～30): the weight ratio of (1～50) is taken up in order of priority and is dissolved in that to be mixed with total concn in the same aqueous solution be 5～50% the aqueous solution, perhaps earlier with whipping agent, suds-stabilizing agent and membrane-forming agent are dissolved in the water respectively and are mixed with single aqueous solution of planting, again with three kinds of single aqueous solution of planting by effective content 100: (1～30): it is 5～50% the aqueous solution that the weight ratio of (1～50) is hybridly prepared into total concn; 2. the high concentration solution of step in 1. poured in (or pump advances) quenching pond, allowing its diffusion automatically (or stirring) become concentration is 0.01～1% dilute aqueous soln; 3. with the aqueous solution in quenching pond input (pump into, be pressed into) spray thrower, spray on the red coke on the quenching car, make the red heat coke surface form the thin air film of one deck, allow coke under the protection of air film, lower the temperature, to below the burnt temperature drop to 200 ℃ the time, stop spray; 4. withdraw from the coke that is cooled.
Indication whipping agent of the present invention, suds-stabilizing agent and membrane-forming agent composed as follows:
Whipping agent comprises air-breathing property whipping agent and the spontaneous whipping agent of reaction, air-breathing property whipping agent comprises tensio-active agent and natural glue or their derivative (as sylvate etc.), and tensio-active agent comprises anion surfactant, cats product, nonionogenic tenside, amphoterics, polymeric surface active agent and special surface active agent again.
Suds-stabilizing agent comprises water-soluble polymer class, protein-based and contain the synthetic surfactant class (polyoxyethylene fat acyl alcohol amine, acetyl amino dodecane, Ninol etc.) that amino, amido, hydroxyl, carboxyl, ester group and ether etc. have the group that generates the hydrogen bond condition, wherein water-soluble polymer comprises natural family macromolecule (starch based, seaweeds, vegetable jelly class, gelatin class and microbiological gum), semi-synthetic family macromolecule (modified-cellulose class and treated starch), synthetic class organic polymer (polymer resin and water-soluble condensed cluster resin).Membrane-forming agent comprises inorganic membrane-forming agent such as carbon black, Graphite Powder 99, silica flour etc. and organic reaction membrane-forming agent such as alkane and its derivative, aromatic hydrocarbons and its derivative, wherein better with aromatic hydrocarbons and its derivative effect, because phenyl ring at high temperature can be decomposed into carbon and attached to coke surface.
In three doses of whipping agent, suds-stabilizing agent and membrane-forming agents, the material that has is a kind of just to play foaming, surely steep and three kinds of effects of film forming, and the material that has is a kind of to play two kinds of effects, and what have can only play a kind of effect.
The advantage that air film coke quenching method of the present invention is used for quenching is: 1. improve coke quality, M
40Improve 2～6%, M
10Reduce by 0.5～4%, CSR improves 3～10%; 2. reduce the water content (water content is lower than 1%) of coke; 3. reduce the quantity discharged of harmful steam, quantity discharged is at below 50% of ortho-water quenching; 4. equipment is equal to the water coke quenching auxiliary, and cost is low; 5. running cost low (being equal to the water quenching).
Embodiment
Embodiment 1: Witco 1298 Soft Acid ammonium and polyvinyl alcohol are dissolved in the water after evenly with 100: 5 mixed, and to be made into total concn be 10% the aqueous solution, be that 0.1% ratio is poured in the quenching pond with this aqueous solution of 10% in concentration again, allow it spread after 10 minutes automatically, again this aqueous solution of 0.1% is pumped into spray thrower, spray on red Jiao on the quenching car, when red burnt temperature is reduced to below 200 ℃, stop spray, withdraw from coke then.
Embodiment 2: with dodecyl methyl ammonium chloride, sylvic acid receive, anthracene sulfonic acid is dissolved in the water after evenly with 100: 10: 10 mixed, and to be made into total concn be 10% the aqueous solution, again the ratio of this aqueous solution of 10% in concentration 0.05% pumped in the coke quenching water pond, allow it spread 10 minutes automatically, this aqueous solution of 0.05% being pumped into spray thrower sprays carry out quenching on red Jiao again, stop spray during to burnt temperature drop to 200 ℃, withdraw from coke.
Claims (9)
1, a kind of air film coke quenching method is characterized in that: step for 1. with whipping agent, suds-stabilizing agent and membrane-forming agent with 100: (1～3): be dissolved in the water after the part by weight of (1～50) mixes, be mixed with total concn and be 5～50% the aqueous solution; 2. will be 1. the aqueous solution of middle and high concentration pour in proportion in (or pumping into) quenching pond, allowing its diffusion automatically (or stirring) become concentration is 0.01～1% the aqueous solution; 3. with the input of the aqueous solution in the quenching pond (pump into, be pressed into) spray thrower, spray on red Jiao on the quenching car, red burnt temperature is reduced to stop spray below 200 ℃; 4. withdraw from the coke that is cooled.
2, air film coke quenching method according to claim 1 is characterized in that the preparation of the aqueous solution in the 1. step can be with whipping agent, stablizer and membrane-forming agent by 100: (1～30): it is 5～50% the aqueous solution that the part by weight of (1～50) successively is dissolved in being mixed with total concn in a kind of water respectively separately.
3, air film coke quenching method according to claim 1, the preparation that it is characterized in that the aqueous solution in the 1. step can be dissolved in the water whipping agent, suds-stabilizing agent and membrane-forming agent separately respectively and be mixed with three kinds of single aqueous solution of planting, then with the effective content of three kinds of aqueous solution by 100: (1～30): (1～50) mixes, and is mixed with total concn and is 5～50% the aqueous solution.
4, air film coke quenching method according to claim 1 is characterized in that whipping agent comprises that air-breathing sex vesicle agent and reaction are from the gas-forming property whipping agent.
5, air film coke quenching method according to claim 4 is characterized in that air-breathing property whipping agent comprises tensio-active agent and natural glue and their derivative.
6, air film coke quenching method according to claim 5 is characterized in that tensio-active agent comprises anion surfactant, cats product, nonionogenic tenside, amphoterics, polymeric surface active agent and special surface active agent.
7, air film coke quenching method according to claim 1 is characterized in that suds-stabilizing agent comprises water-soluble polymer class, protein-based and contain the synthetic surface agent class of amino, amido, hydroxyl, carboxyl, ester group and ether.
8, air film coke quenching method according to claim 7 is characterized in that the water-soluble polymer class comprises natural family macromolecule, semi-synthetic family macromolecule and synthetic family macromolecule.
9, air film coke quenching method according to claim 1 is characterized in that membrane-forming agent comprises carbon black, Graphite Powder 99, silica flour, alkane and its derivative, aromatic hydrocarbons and its derivative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100348503A CN101294084B (en) | 2007-04-29 | 2007-04-29 | Air film coke quenching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100348503A CN101294084B (en) | 2007-04-29 | 2007-04-29 | Air film coke quenching method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101294084A true CN101294084A (en) | 2008-10-29 |
| CN101294084B CN101294084B (en) | 2010-06-23 |
Family
ID=40064626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100348503A Expired - Fee Related CN101294084B (en) | 2007-04-29 | 2007-04-29 | Air film coke quenching method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101294084B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629117A (en) * | 2009-08-04 | 2010-01-20 | 郑州大学 | High effective coke degradation inhibitor and preparation method thereof |
| CN102010722A (en) * | 2009-09-07 | 2011-04-13 | 王暾 | Foam coke-quenching method |
| CN103468279A (en) * | 2013-09-07 | 2013-12-25 | 鞍钢股份有限公司 | System and method for improving coke thermal state strength of dry quenching furnace |
| CN102010723B (en) * | 2009-09-07 | 2014-01-29 | 王暾 | Air film water coke quenching additive |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5628878A (en) * | 1994-05-12 | 1997-05-13 | Reynolds Metals Company | Method of reducing airburning in petroleum coke |
| JP4492043B2 (en) * | 2003-06-09 | 2010-06-30 | ダイキン工業株式会社 | Compressor |
| CN100571820C (en) * | 2005-09-19 | 2009-12-23 | 李汉明 | High-concentration cold-resistant sea-water type water-to-film foam fire extinguishant |
-
2007
- 2007-04-29 CN CN2007100348503A patent/CN101294084B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629117A (en) * | 2009-08-04 | 2010-01-20 | 郑州大学 | High effective coke degradation inhibitor and preparation method thereof |
| CN102010722A (en) * | 2009-09-07 | 2011-04-13 | 王暾 | Foam coke-quenching method |
| CN102010723B (en) * | 2009-09-07 | 2014-01-29 | 王暾 | Air film water coke quenching additive |
| CN103468279A (en) * | 2013-09-07 | 2013-12-25 | 鞍钢股份有限公司 | System and method for improving coke thermal state strength of dry quenching furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101294084B (en) | 2010-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100571820C (en) | High-concentration cold-resistant sea-water type water-to-film foam fire extinguishant | |
| CN102167939B (en) | Insulator for low-temperature construction of asphalt pavement road roller and method for preparing same | |
| CN103059581B (en) | Anti-freezing emulsified asphalt and preparation method thereof | |
| CN101406928B (en) | Organosilicon microemulsion antisticking agent and preparation method thereof | |
| CN105111936A (en) | Asphalt separant and preparation method thereof | |
| CN101294084A (en) | Air film coke quenching method | |
| CN102234432B (en) | Anti-stripping warm mix asphalt additive agent comprising surfactant, preparation method and application thereof | |
| CN101402806B (en) | Deinking agent and method of producing the same | |
| CN106362344A (en) | Cold-resistant highly-efficient environment-friendly water-based fire-extinguishing agent and preparation method thereof | |
| CN102585581B (en) | Ultrasonic water-based cleaning agent for printing plate roller and preparation method for cleaning agent | |
| CN102491829A (en) | Nitrogen fertilizer synergist composition | |
| CN101486915A (en) | Novel polymer sand fixing agent | |
| CN105217638A (en) | A kind of preparation method of the high stable nano silicon aqueous solution and the application of the gained high stable nano silicon aqueous solution | |
| CN107653011A (en) | A kind of automobile specified gasolene cleaner and preparation method thereof | |
| CN109675423A (en) | A kind of formaldehyde scavenger and preparation method thereof | |
| CN101775255B (en) | Rosin polycondensate air-entraining agent and application thereof | |
| CN103964970B (en) | Waste paper modified coated control release fertilizer and preparation method thereof | |
| CN100429283C (en) | General efficient paint remover | |
| CN101792621B (en) | Preparation method of non-corrosive metal paint remover | |
| CN101294083B (en) | Air film coke quenching additive agent | |
| CN100417715C (en) | Airplane cleaning agent and preparation method thereof | |
| CN106398528A (en) | Ultralow temperature nano antifreezing isolating emulsion, and preparation method thereof | |
| CN110124246A (en) | A kind of preparation method of graphite ene-type high-efficiency environment friendly extinguishing chemical | |
| CN102010723B (en) | Air film water coke quenching additive | |
| CN103059579B (en) | Composite anti-freezing emulsified asphalt and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hunan Guanghe Chemical Co., Ltd. Assignor: Wang Tun Contract record no.: 2010430000024 Denomination of invention: Air film coke quenching method License type: Exclusive License Open date: 20081029 Record date: 20100428 |
|
| ASS | Succession or assignment of patent right |
Owner name: HU'NAN GUANGHE CHEMICAL CO., LTD. Free format text: FORMER OWNER: WANG TUN Effective date: 20120228 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 410205 CHANGSHA, HUNAN PROVINCE TO: 410600 CHANGSHA, HUNAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120228 Address after: 410600 Hunan Ningxiang County Ningxiang road tricyclic junction Patentee after: Hunan Guanghe Chemical Co.,Ltd. Address before: 722 Changsha aerospace hospital, Wangcheng 410205, Hunan Province, China Patentee before: Wang Tun |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20180429 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |